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Service bulletins for the 2003 Buick Century

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

400 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
041420042004-09-17. Service bulletin. ELECTRICAL SYSTEM. WITH THE AC ON, LED APPEARS TO TOGGLE ON AND BACK OFF IN ONE UNIQUE CONDITION. THIS CONDITION IS THE HEADLAMPS ARE ON, INSTRUMENT PANEL LAMPS ARE DIMMED TO THE LOWEST EXTREME, DAYTIME CONDITIONS AND THE REAR DEFOG BUTTON IS TURNED ON AND OFF OR ALLOWED TIME TO TIMEOUT. ENGINEERING INVESTIGATED HAS DETERMINED THE CONDITION IS NORMAL. *TT
040820042004-09-17. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR. THE CURRENT BRAKE ROTOR MINIMUM ALLOWABLE THICKNESS AFTER REFINISH, OR MINIMUM THICKNESS SPECIFICATION, FOUND IN THE PAST SERVICE MANUAL APPLICATIONS ARE INCORRECT. PLEASE USE CORRECT INFORMATION AS FOLLOWS. *TT
012320042004-09-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION FLUID LEAK FROM REVERSE SERVO COVER AT AMBIENT TEMPERATURES. TRANSMISSION FLUID MAY BE DETECTED ON THE LOWER PAIN RAIL OR CASE SIDE. MOST LEAK REPORTS HAVE BEEN FOUND DURING PREDELIVERY INSPECTION. GM VOICEMAIL EXPRESS. *TT
30112004-08-25. Service bulletin. EQUIPMENT. WHEN USING VOICE RECOGNITION DIALING, SOME NUMBERS OR COMMANDS MAY NOT BE UNDERSTOOD BY THE SYSTEM ESPECIALLY THE NUMBER TWO (2). *TT
013532004-07-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE MISFIRE DUE TO INJECTOR FRETTING CORROSION. *TT
005792004-06-29. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE B 1001 IN BCM AND/OR POWERTRAIN CONTROL MODULE (PCM) SPEAICAL PROCEDURE. *MJ
00372D2004-06-09. Service bulletin. EQUIPMENT:ELECTRICAL. ONSTAR SYSTEM IS ATTEMPTING AND/OR COMPLETING PHONE CALLS WHICH THE OPERATOR OF THE VEHICLE DID NOT INITIATE. *TT
016502004-06-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT. MANUAL DUAL ZONE FAN AND MODE KNOB REPLACEMENT. SERVICE VME. *TT
016142004-06-04. Service bulletin. STRUCTURE. RUSTY OR CORRODED APPEARANCE ON UNDERCARRIAGE COMPONENTS.*MR
016792004-06-03. Service bulletin. ELECTRICAL SYSTEM. 3.1L LG8 ENGINE CHANGE OIL LIGHT COMES ON TOO SOON.*MR
020272004-05-20. Service bulletin. ELECTRICAL SYSTEM. A/C ON LED INOPERATIVE OR APPEARS TO TOGGLE ON AND OFF. ALSO INCLUDING 2005 BUICK CENTURY AND 2005 BUICK REGAL. *MR
020382004-05-20. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE B1000. *MR
016842004-05-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHANGE OIL SOON INDICATOR LIGHT COMES ON TOO SOON. SIT BULLETIN 1442093. *TT
017402004-04-27. Service bulletin. ELECTRICAL SYSTEM:WIRING. CROSS INJECTOR WIRES CAUSING MISFIRE AT STEADY STATE SPEED AND RPM, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, AND A P0300 SET. SIT BULLETIN 1460291. *TT
017152004-04-27. Service bulletin. POWER TRAIN. 4T65E TRANSMISSION FLUID LEAK FROM THE REVERSE SERVO COVER IN COLD WEATHER. *TT
0207300482004-04-23. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. PRESSURE CONTROL SOLENOID REPLACEMENT FOR 4T65-E, 4T40-E, AND 4T45-E TRANSAXLE/TRANSMISSION.*MR
030844005B2004-03-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE. *TT
015272004-02-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. A WHISTLE TYPE NOISE COMING FROM THE ENGINE. SIT BULLETIN 1406534. *TT
015332004-02-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE START AND STALL AFTER FUELING WITH NO DIAGNOSTIC TROUBLE CODES (DTCS). SIT BULLETIN 1408781. *TT
015562004-02-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CRANKS BUT DOES NOT RUN. *TT
000604049B2004-02-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SOME VEHICLES BUILT PRIOR TO VIN BREAKPOINT 1F136536 MAY EXHIBIT INTERMITTENT MALFUNCTION INDICATOR LAMP / SERVICE ENGINE SOON INDICATOR ILLUMINATION; ANTI-LOCK BRAKE SYSTEM WARNING LIGHT ILLUMINATION; STALL / NO START CONDITION; VARIOUS ELECTRICAL SYSTEM FAILURES; AND / OR VARIOUS DRIVEABILITY CONCERNS. *TT
0114032004-01-30. Service bulletin. STEERING. INCREASED STEERING EFFORT WHEN TURNING RIGHT OR LEFT. GM VOICEMAIL EXPRESS. *TT
0917032004-01-27. Service bulletin. ELECTRICAL SYSTEM. INSTRUMENT PANEL CLUSTER FUNCTION INTERMITTENTLY INOPERATIVE, ESPECIALLY FUEL GAUGE OR PRINDEL, INTERMITTENT ENGINE NO CRANK OR NO START WITH A SECURITY LIGHT ON, CANNOT REMOVE THE TRANSAXLE SELECTOR LEVER FROM THE PARK POSITION, AND SCS, ANTI-LOCK BRAKE SYSTEM (ABS) OR TRACTION CONTROL SYSTEM (TCS) LIGHTS ON WITH DIAGNOSTIC TROUBLE CODES (DTCS) B1422, B2957 OR B2958. GM VOICEMAIL LOG. *TT
1009032004-01-22. Service bulletin. ELECTRICAL SYSTEM. REPLACEMENT OF A BODY CONTROL MODULE (BCM) OR IGNITION SWITCH DUE TO LACK OF IGNITION ONE OR IGNITION ZERO VOLTAGE. GM VOICEMAIL LOG. *TT
030849018B2004-01-07. Service bulletin. STRUCTURE:BODY. BROKEN CONSOLE OR STORAGE COMPARTMENT LID LATCH. *TT UPDATED *EH

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.